Differential Wire Equal Length Calculation Method
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Solution Overview
Problem
Manual adjustment of differential wires in high-speed circuits to achieve equal lengths is labor-intensive and prone to errors due to variations in Pin Delay and wiring corners, requiring numerous protrusions which are uneven and time-consuming.
Innovation Solution
A method and apparatus that calculate the total length of differential wires, determine the length difference, and automatically determine the required protrusions by using a specific calculating relation (L=2*(h/sinB−h/tanB) to ensure equal lengths, reducing manual workload and increasing accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual adjustment of differential wires is performed to achieve equal lengths, then the equal length requirement is satisfied, but the workload and time consumption increase significantly
Solution Approach 1:
The patent implements automatic calculation and adjustment of differential wire lengths using computer software. The system self-calculates the required protrusion quantities based on wire length differences and automatically generates adjustment instructions, eliminating the need for manual measurement and adjustment. This self-service approach resolves the contradiction by maintaining precision while dramatically improving productivity.
Solution Approach 2:
The patent replaces manual mechanical adjustment with automated computational methods. Instead of relying on operators to manually measure and adjust wire lengths, the system uses computer algorithms to calculate precise protrusion quantities and generates automated guidance. This substitution resolves the contradiction by maintaining manufacturing precision while eliminating time-consuming manual operations.
2Manufacturing precision
If multiple protrusions are made to compensate for large length differences, then the equal length requirement is met, but the protrusions become uneven and the process becomes more complex
Solution Approach 1:
The patent performs preliminary calculation of the exact protrusion quantity needed before any physical adjustment is made. The system calculates the precise number of protrusions required based on the length difference and wire specifications, then guides the operator to make exactly that many uniform protrusions. This preliminary action resolves the contradiction by preventing uneven protrusions and simplifying the process through precise pre-calculation.
Solution Approach 2:
The patent changes the approach from manual estimation to precise parameter-based calculation. The system uses specific parameters (wire length difference, protrusion height, protrusion angle) to calculate the exact number of protrusions needed. By changing from qualitative manual adjustment to quantitative parameter-driven adjustment, the system resolves the contradiction by ensuring uniform protrusions and simplifying the overall process.
3Measurement precision
If manual calculation and adjustment is performed for each differential wire pair, then individual precision is achieved, but the overall processing time increases
Solution Approach 1:
The patent creates a universal software system that can handle multiple differential wire pairs simultaneously. Instead of requiring separate manual calculations for each wire pair, the system processes all pairs through a unified algorithm that calculates protrusion quantities based on each pair's specific parameters. This universality resolves the contradiction by maintaining individual measurement precision while dramatically reducing overall processing time through batch processing.
Solution Approach 2:
The patent uses the existing wire length data and applies a standardized calculation model to determine protrusion requirements. The system copies the measurement data, applies the universal calculation formula, and generates adjustment instructions automatically. This copying approach resolves the contradiction by maintaining precision through consistent application of the calculation model while eliminating time-consuming manual recalibration for each wire pair.
Data Source
AI summary
The present application discloses a method for calculating equal lengths of wound differential wires, wherein the method includes: calculating total lengths of a P differential wire and an N differential wire of a to-be-wound-with-equal-lengths target differential-wire pair; according to the total lengths of the P differential wire and the N differential wire, calculating a differential-wire length difference between the P and N differential wires, and determining the one having a lower total length as a target differential wire; acquiring a distance between the P differential wire and the N differential wire, and using the distance as a protruding height; acquiring a preset protruding angle, and calculating the protruding height and the protruding angle according to a first calculating relation, to obtain a length added by one protruding; and according to the differential-wire length difference and the length added by one protruding, calculating a total quantity of protrudings.